The company plans to pump in seawater and use that for cleaning the fish in the initial stages.

FORBES: Blue Waters Gray Areas

One early discovery: It's cheaper and easier to pump in the seawater during high tide.

CNN: San Francisco's Exploratorium opens in sparkling new home

So far, the three Japanese reactors experiencing cooling problems haven't released significant amounts of radiation, but the situation is dangerous, as an explosion Monday morning in Japan damaged a pump bringing in cooling seawater at one reactor and a third reactor began experiencing cooling problems Monday afternoon.

WSJ: Uranium Firms Take Hit After Earthquake

Meanwhile, engineers are continuing to pump some 11, 500 tonnes of low-level radioactive seawater into the sea so the more highly contaminated water from reactor No 2 can be stored in waste buildings.

BBC: Japan quake: Nitrogen pumped into nuclear reactor